The antonyms for the word "vitiations" are purification, improvement, enhancement, refurbishment, and renewal. While vitiations means the act of making something imperfect or corrupt, its antonyms mean the opposite. Purification means to remove any impurities or contaminants. Improvement means to make something better, bigger, or stronger than before. Enhancement refers to the act of improving the value or quality of something. Refurbishment means to renovate or repair something in a way that makes it look new again. Finally, renewal refers to the act of replacing something old with something new or revitalizing something that has lost its vitality.